Finding the Fourth Proportional to 166,061.20, 249,154.12 and 99,548.72

Step by Step Solution

1. Step 1: Write the proportion equation
   166,061.20 : 249,154.12 = 99,548.72 : x
2. Step 2: Convert to fraction form
   166,061.20/249,154.12 = 99,548.72/x
3. Step 3: Cross multiply
   166,061.20x = 249,154.12 × 99,548.72
4. Step 4: Simplify right side
   166,061.20x = 24,802,973,728.73
5. Step 5: Solve for x
   x = 24,802,973,728.73/166,061.20
6. Step 6: Final answer
   x = 149,360.44